Cyclone separator of air cooling structure and circulating fluidized bed boiler with same

The invention provides a cyclone separator of an air cooling structure and a circulating fluidized bed boiler with the same, and belongs to the technical field of circulating fluidized bed boilers. The cyclone separator of the air cooling structure comprises a separator shell, the separator shell is provided with a filtering cavity and an air cooling cavity annularly arranged outside the filtering cavity; an inlet flue and an outlet flue which are communicated with the outside are arranged at the upper end of the filtering cavity, and an ash falling pipe communicated with the outside is arranged at the lower end of the filtering cavity; and the upper end of the air cooling cavity is provided with an outlet air duct communicated with the outside, and the lower end of the air cooling cavity is provided with an inlet air duct communicated with the outside. According to the cyclone separator, the air cooling cavity surrounds the filtering cavity in the circumferential direction, in the filtering process, cold air